the fiscal cliff negotiations, don, have just come down to two men tonight, senator mitch mcconnell of the republicans and then vice president joe biden. we'll find out in the morning whether they were able to make any progress. back to you, don. >> fingers crossed. thank you. we'll have more on these developing stories at the top of the hour. >>> usain bolt is the fastest human being the world's ever known, but i wonder how he'd fair running against the animal jack hanna has just brought out. jack, we seem to have a large, fully formed cheetah. >> this is a cheetah, goes 70 miles an hour. we clock him at 70. the cheetah's eyesight is impeccable, two miles they can spot a rabbit. >> two miles? >> yes. turn him around here for a second. look at his eyes, let the guys pick him up on the camera. notice the dark marks under his eyes like a football player, baseball player, mother nature invented that because the cheetah's one of the only cat to hunt in the heat of the day, 110 degrees outside, they have to hunt. they are a weak cat. look at the foot, you got good guys on these cameras. the